Device for locking the key-levers in type-writing machines.



No. 842,796. I PATENTED JAN. 29, 1907.

l '0. J. MOHNS. 1 DB'VIGE'FOR' LOGKiNG THE KEY LE'VERS IN TYPE WRITINGMACHINES.

APPLICATION FILED AUG. 27, 1904.

2 SHEETS-SHEET 1.

PATENTED JAN. 29, 1907.

DEVICE FOR ,LOOKING THE KEY LBVBRs IN TYPE WRITING MACHINES.

APPLICATION FILED AUG. 27, 19041 2 SHEETS-SHEET 2.

of Chemnitz, Germany, have invented a cerj render it impossible'l'or anyunauthorized 1 downward movement of the link e, and therethe frame ofthe machine at 32 and having tnairnn srgrrns atom @FFIQE.

CARL JULIUS MOHN S, O F CHEMNITZ, GERMANY, ASSIGNOR'TO THE FIRM OF lAN-DEREK FAHRRADWERKE, VORM. TINKLHOFER & JAENlCKEQ L OF SUHONAU,SAXONY, GERMANY.

DEVICE FOR LOOKING THE KEYELEVERS an TYPE-warrant; Minot-tines.)

Specification of Letters Patent.

Application filed August 27,1904. .n No. 222.464.

'10 11/! m/tmo [1' ma 1-0/1 067%. t W'he'n typing, the nut n is screwedback Be it known that l, CARL JULIUs Monxs, against'thelock-nut0,andthusleavesthelever free. to move to the right, Fig. 1. I

in order that at the end of a line any of the keys may be used, ifnecessary-t'or example, to iinish oil a word-the operator presses onthenuts n and 0, (n being screwed out against 0,) and thereby forces thelever IB'LO the right,

tain new and useful Device for Locking the I Key-Levers in Typcv'ritingMachines, of which-the following is a specification.

This invention relates to a device for lock- 1 ingthe key-levers intype-writers andtheobl ject is to enable the key-levers, in addition toFig. 1. their ordinai'y locking by the papcr-carare also carried to theright and the key-leriage at the end of the line, to' be locked at lvers thereby released, and, further, the link e any other position ofthe carriage, sons to and parts attached thereto are uniniluen ced bythis movement, since the slot in the link 6 allows the pin on the arm ofthe lever h to move freely. ()n pressing the nuts 0 and n the spring I.is put in tension, and when the person to use the machine unless thelocking; device is released.

The accompanying drawings illustrate one 3 convenient manner of carryingthe invention I into eil'ect, Figure 1 being a longitudinal section of amachine with the device applied, and Fig. 2 a front elevation thereof.

The papencarriage a carries a fixed stop I), i which shortly before theend oi the line is reached strikes the stop (1. This stop is ad justableon the rotatable rod 0, soas to the length of-the line, and is providedwith a 1 suitable cam-surface, so as to rotate the rod c l on contactwith the stop I).

The rod c is provided with a crank c, which on'the rotation ol 0actuates a link e, which operates the signal-bell y in the usual manner.A spring f is put in tension onthe vers'l. When the machine is not inuse, the nut 12 is screwed up against the front plate 91 ol' the machineand the lever 93 thereby nut. ais'screwed out against the lock-nut 0 andthe key-levers Z thereby released ready for use.

certained the nature of my said invention and in what manner the same isto be per formed, l declare that what I claim is A locking device fortype-writers consisting of a bell-crank lever, a locking-bar carried byone arm thereof, a rocking bar, a link connecting said rocking bar withtheother arm of the bell-crank lever, means for rock- .ing the bar bythe carriage, a lever having fore tends to return it with the rod 0 totheir original posit-ions.

The lower end of the link e is formed with a slot which engages a pin 6on an arm of one of the side levers h. 'ihese' levers 7tcarry the;locking-bar i, and, on an extension of the arm; on the lever 'h isconnected a spring k, adapted, on the downward movement of the rod 0, todraw down the said arm and throw the locking-bar i over to the left, Fig. 1. The I locking-bar thereupon engages projections on the keydeversI, so that depression of any of the keys is impossible.

Connected to the end otthe lever h and swinging therewith is a lever :c,pivoted on hand in presence of two witnesses.

' CARL J IUS MOHNS. Witnesses: i

I FREDERICK J.-D1E'rznAN, ERNST G. MEYER.

connected to it athreaded pin m, fitted with a nut'n and lock-nut 0. I c

The levers h and the locking-bar i I operator releases the said nutsreturns the loclung-bar '0 under the projections onthe le- Having nowparticularly described and as.-

Patented Jan. 29,1907.

moved to the left, Fig. 1, and the keys locked, ()n commencing to usethe machine the one endconnected to the frame and its other T11 Witnesswhereof I have hereunto set my

